Persistent Systems Interview Questions, Process, and Tips

Aptitude questions are asked

Q1. Programming questions have asked
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Q2. Object oriented programing questions concepts
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Q1. It is system generated round
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Sorting algorithm with its time complexity. SQL, Probability

Q1. Describe prior work, then product related questions and troubleshooting skills
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Q1. Explain the Kubernetes Architecture ?
Ans. 
Kubernetes Architecture is a container orchestration platform that manages the deployment, scaling, and operation of application containers.
• Kubernetes follows a master-slave architecture with a master node and multiple worker nodes.

• The master node controls the cluster and schedules workloads, while the worker nodes run the actual containers.

• Key components of Kubernetes architecture include Pods, Nodes, Services, and Co...read more
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Q2. How you handle container orchestration ?
Ans. 
I handle container orchestration using tools like Kubernetes and Docker Swarm.
• Utilize Kubernetes for managing containerized applications

• Use Docker Swarm for orchestrating containers across multiple hosts

• Implement service discovery and load balancing for efficient orchestration
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Q1. What is NodeJs and why we need to use
Ans. 
Node.js is a runtime environment that allows you to run JavaScript on the server side.
• Node.js is built on Chrome's V8 JavaScript engine.

• It is lightweight and efficient for building scalable network applications.

• Node.js uses an event-driven, non-blocking I/O model, making it ideal for real-time applications like chat apps or streaming services.
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Q2. NodeJs is single threaded but how it achieved multiple threading
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NodeJs achieves multiple threading through event loop and asynchronous non-blocking I/O operations.
• NodeJs uses event loop to handle multiple requests efficiently without blocking the main thread.

• It utilizes asynchronous non-blocking I/O operations to perform tasks concurrently.

• NodeJs can also create child processes to handle heavy computational tasks in parallel.
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Q1. Aws sevices you have worked on
Ans. 
I have worked on various AWS services including S3, EC2, Lambda, Glue, and Redshift.
• S3 - Used for storing and retrieving data

• EC2 - Used for running virtual servers

• Lambda - Used for serverless computing

• Glue - Used for ETL (Extract, Transform, Load) processes

• Redshift - Used for data warehousing and analytics
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Q2. Question on python list and dictionary
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Q1. Questions on project and skillset
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